Leigh RTJ400 Router Table Joinery Jig

Developed for use with a router table, this joinery jig lets you accurately cut dovetails and box joints in stock up to 15-1/2" wide. It produces through dovetails with pins spaced on 1-1/2" centers and box joints with 3/32", 3/16", 3/8" or 3/4" fingers in stock from 1/8" to 1" thick. Half-blind dovetails can be cut in material from 1/2" to 1" thick. With an optional guide bushing (sold separately) and a 0.313" straight cutter (16J07.40), you can also cut through dovetails with a 3/4" pin spacing. Optional and included bushings each fit table openings with a 1-3/16" through bore and a 1-3/8" counterbore.

Made largely of anodized aluminum, the jig has a two-piece design that uses an extruded beam to hold the stock perpendicular to a CNC-machined template. Adjustable side stops allow repeatable positioning, and have an offset for registering a rabbeted drawer front. Fast-acting cam clamps reliably hold the work against a non-marring textured clamping surface. An eccentric guide bushing lets you accurately change the distance between the cutter and template, eliminating the need to fine tune jig position for joint fit. When cutting 3/4" box joints or through tails spaced 1-1/2" on center, you can use the included filler blocks to occupy the template recesses not being used. Interchangeable instruction cards provide an overview of the set-up required for each joint, and slip into a channel in the top of the beam for quick reference.